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International Journal of Chemical Engineering
Volume 2012 (2012), Article ID 712986, 11 pages
http://dx.doi.org/10.1155/2012/712986
Research Article

Bubble Dynamics of a Single Condensing Vapor Bubble from Vertically Heated Wall in Subcooled Pool Boiling System: Experimental Measurements and CFD Simulations

Institute of Chemical Technology, Matunga, Mumbai 400 019, India

Received 29 October 2011; Revised 22 February 2012; Accepted 26 March 2012

Academic Editor: Mahesh T. Dhotre

Copyright © 2012 Arijit A. Ganguli et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Bubble dynamics of a single condensing vapor bubble in a subcooled pool boiling system with a centrally heated cylindrical tank has been studied in the Rayleigh number range 7 . 9 × 1 0 1 2 < R a < 1 . 8 8 × 1 0 1 3 . The heat source in the system is steam condensing inside a vertical tube. The tube was placed in the center of the tank (300 mm i.d., 300 mm height) which is well filled with water. Experimental investigation has been carried out with High Speed Camera while Computational Fluid Dynamics (CFD) investigation has been performed using Volume of Fluid (VOF) method. The heat source has been modeled using simple heat balance. The rise behavior of condensing bubbles (change in size during rise and path tracking) was studied and the CFD model was validated both quantitatively and qualitatively.